| Starter | Tm | Tier | Game |
|---|---|---|---|
| Pete Alexander | PHI | 18.05 | 191509160_PHI_CIN |
| Walter Johnson | MIN | 8.38 | 191509160_BAL_MIN |
| Rube Foster | BOS | 1.26 | 191509160_DET_BOS |
| Dick Rudolph | ATL | 1.04 | 191509140_ATL_CHN |
| Jeff Pfeffer | LAN | 0.87 | 191509160_LAN_CHN |
| Starter | Tm | Tier | Game |
|---|---|---|---|
| Rube Marquard | LAN | -4.69 | 191509140_LAN_SLN |
| Bob Shawkey | NYA | -3.12 | 191509160_CHA_NYA |
| Phil Douglas | CHN | -1.66 | 191509150_ATL_CHN |
| Grover Lowdermilk | DET | -1.43 | 191509140_DET_NYA |
| Vean Gregg | BOS | -0.72 | 191509150_CHA_BOS |
Based on accumulated WAA for this season up to 1915-09-16.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +002+ | 12.2 | Pete Alexander | 348.3 | PHI |
| +003+ | 8.6 | Walter Johnson | 300.7 | MIN |
| +010+ | 5.33 | Ernie Shore | 216 | BOS |
| +012+ | 4.62 | Jim Scott | 261.3 | CHA |
| +014+ | 4.42 | Fred Toney | 185 | CIN |
| +016+ | 4.26 | Al Mamaux | 228.7 | PIT |
| +017+ | 4.21 | Ray Fisher | 238 | NYA |
| +024+ | 3.72 | Jeff Pfeffer | 245.3 | LAN |
| +025+ | 3.64 | Harry Coveleski | 280 | DET |
| +027+ | 3.51 | Dick Rudolph | 301.3 | ATL |
| +029+ | 3.35 | Gene Dale | 260.7 | CIN |
| +030+ | 3.16 | Rube Foster | 228 | BOS |
| +032+ | 2.86 | Joe Benz | 205.3 | CHA |
| +034+ | 2.83 | Hooks Dauss | 283.7 | DET |
| +044+ | 2.53 | Tom Hughes | 237.3 | ATL |
| +048+ | 2.44 | Erskine Mayer | 251 | PHI |
| +050+ | 2.33 | Dutch Leonard | 153.3 | BOS |
| +052+ | 2.22 | Jeff Tesreau | 270.7 | SFN |
| +054+ | 2.16 | Pete Schneider | 238.7 | CIN |
| +061+ | 2.01 | Harry Harper | 62.7 | MIN |
| +066+ | 1.82 | Jimmy Lavender | 186.3 | CHN |
| +065+ | 1.82 | Erv Kantlehner | 135 | PIT |
| +071+ | 1.75 | Bob Harmon | 254 | PIT |
| +073+ | 1.66 | Ernie Koob | 110.3 | BAL |
| +074+ | 1.62 | Bert Humphries | 138 | CHN |
_